Half to theodoee s



`(No Model.)

F. G. BROWNELL.

PACKING FOR VALVE STEMS AND PISTON RODS.

Patented Jne 1,.1886` UNITED STATES PATENT OFFICE.

AFREDERICK G. BROWNELL, OF BURLINGTON, VERMONT, ASSIGNOR OF ONE- HALF TOTHEODORE S. PEOK, OF SAME PLAGE.

PACKING FOR VALVE-STEMS PISTON-RODS.

SPECIFICATION forming part of Letters Patent No. 343,003, dated June 1,1886,

(No model.)

T @ZZ whom it may concern.:

Beit known that I, FREDERICK G. BROWN- ELL, of Burlington, in the Stateof Vermont, have invented a new and useful Improvement in Pacliings forValveStems and Piston-Rods',

of which the following is a specification.

My invention consists in a valve stein or piston-rod packing, the partsof which are constructed and arranged t'or operation in the ro mannerhereinafter described, the object being to obtain a cheap, eifecient,and durable packing ot' the kind named.

In the accom panyi ng drawing is represented in longitudinal centralsection a packing made i5 in accordance with my invention.

A is a portion of the steam-chest, and B is a portion of the valvestem.

C is the stuffing-box, bolted to the steamchest at' a. lts rear endenters the steam-chest,

zo and in an opening therein is a flanged bearing-sleeve, l), having oneach side of its iiange a hub, one of which foi-nis a guide for thespring E, and the other ot' which enters the steam-chest or that end ofthe stuthng-box which extends into the steam-chest and l'orms a guidefor the valve-stem. The tlange itself i'orrns a rest or bearing i'or thespring E, which presses and holds in its seat the sleeve D. NVithin thestntngbox is aloose collarF, 3o which is provided on its face adjoiningthe spring E with a hub, which is encircled by and lornis a guide forthe spring. The outer face of this collar is concave or eupshaped. Thegland is represented at G. That end of it which enters the stuthng boxis concave or cup-shaped, like the collar F, and in the space betweenthe two is asbestus, soapstone, tlax, or other suitable packing, H. Theshape ot' the coneaves on the ends of the gland and col- 40 lar are suchthat but very litt-le pressure is re quired upon the packing H in orderto force it up against the valve-stem.

The bolts and nuts by which the gland and stnttinghox are drawn and heldtogether are represented at I. Between the meeting flanges ot' the glandand stuffing-box is interposed a lead or copper wiregasket, b, to make asteampacking, thereby making a Waterpacking and' steam-tlghtjoint, andserving to some extent also to keep the stem lubricated. To affordthorough lubrication to the stein, the gland is cast with a recess orchamber, c, in its top, which extends from the outside to the inside ofthe gland, and is intended to contain Woolen waste or other substance,d, to holdthe oil and supply it to the valve-stem, and to keep grit ordirt from drawing into the packing.

Having now described my improvement, what I claim, and desire to secureby Letters Patent, is-

rlhe stutting-box C, the gland G, provided with a concave inner face,the corresponding ly-concave collar F, provided with a guidehub, thepacking H, the flanged sleeve D, provided on one side of its flange witha guidehub for the spring, and on theother side with a hub that entersthe steam-chest and forms a guide for the valve-stein at that point,andthe spring E. contined between said sleeve and collar and encirclingthe hub thereon, all constructed and arranged as hereinbefore shown andspecilied.

In testimony whereotlhavehereunto set my hand this 9th day ol March,1886.

FREDERICK G. BROWNELL. litnessesz ARTHUR R. S'r. Pn'rnns, HARVEY T.BUTTER.

